diff options
| -rw-r--r-- | app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java index 11b99830..691eef31 100644 --- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java +++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java @@ -170,6 +170,7 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS private boolean showToast = false; private boolean isSortingComments = false; private boolean mVolumeKeysNavigateComments; + private boolean mIsSmoothScrolling = false; private LinearLayoutManager mLinearLayoutManager; private CommentAndPostRecyclerViewAdapter mAdapter; private RecyclerView.SmoothScroller mSmoothScroller; @@ -255,6 +256,61 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS mLinearLayoutManager = new LinearLayoutManager(this); mRecyclerView.setLayoutManager(mLinearLayoutManager); + + if (children != null && children.size() > 0) { + mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { + @Override + public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) { + super.onScrolled(recyclerView, dx, dy); + if (!mIsSmoothScrolling) { + if (dy > 0) { + fab.hide(); + } else { + fab.show(); + } + } + + if (!isLoadingMoreChildren && loadMoreChildrenSuccess) { + int visibleItemCount = mLinearLayoutManager.getChildCount(); + int totalItemCount = mLinearLayoutManager.getItemCount(); + int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition(); + + if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) { + fetchMoreComments(); + } + } + } + + @Override + public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) { + if (newState == RecyclerView.SCROLL_STATE_IDLE) { + mIsSmoothScrolling = false; + } + } + }); + } else { + mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { + @Override + public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) { + super.onScrolled(recyclerView, dx, dy); + if (!mIsSmoothScrolling) { + if (dy > 0) { + fab.hide(); + } else { + fab.show(); + } + } + } + + @Override + public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) { + if (newState == RecyclerView.SCROLL_STATE_IDLE) { + mIsSmoothScrolling = false; + } + } + }); + } + mSmoothScroller = new LinearSmoothScroller(this) { @Override protected int getVerticalSnapPreference() { @@ -563,10 +619,18 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS mAdapter.addComments(expandedComments, hasMoreChildren); if (children.size() > 0) { + mRecyclerView.clearOnScrollListeners(); mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); + if (!mIsSmoothScrolling) { + if (dy > 0) { + fab.hide(); + } else { + fab.show(); + } + } if (!isLoadingMoreChildren && loadMoreChildrenSuccess) { int visibleItemCount = mLinearLayoutManager.getChildCount(); @@ -578,6 +642,13 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS } } } + + @Override + public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) { + if (newState == RecyclerView.SCROLL_STATE_IDLE) { + mIsSmoothScrolling = false; + } + } }); } } @@ -636,10 +707,18 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS mAdapter.addComments(expandedComments, hasMoreChildren); if (children.size() > 0) { + mRecyclerView.clearOnScrollListeners(); mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); + if (!mIsSmoothScrolling) { + if (dy > 0) { + fab.hide(); + } else { + fab.show(); + } + } if (!isLoadingMoreChildren && loadMoreChildrenSuccess) { int visibleItemCount = mLinearLayoutManager.getChildCount(); @@ -651,6 +730,13 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS } } } + + @Override + public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) { + if (newState == RecyclerView.SCROLL_STATE_IDLE) { + mIsSmoothScrolling = false; + } + } }); } if (changeRefreshState) { @@ -991,6 +1077,7 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS } mSmoothScroller.setTargetPosition(nextParentPosition); if (mLinearLayoutManager != null) { + mIsSmoothScrolling = true; mLinearLayoutManager.startSmoothScroll(mSmoothScroller); } } @@ -1007,6 +1094,7 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS } mSmoothScroller.setTargetPosition(nextParentPosition); if (mLinearLayoutManager != null) { + mIsSmoothScrolling = true; mLinearLayoutManager.startSmoothScroll(mSmoothScroller); } } |